Sean Callahan lives in Denver Colorado and has been coloring professionally around 4 years now. He originally taught himself to color but as he grew more experienced he learned that he needed more to fully explore a career in comics. He then decided to take courses with Comics Experience where he learned a ton under the tutelage of Chris Sotomayer. After that he has worked on countless successful kickstarters as well as many self published books and works with Action Lab on the title Stray and several comics in the Zombie Tramp universe.